Re: [PATCH RFC 03/77] PCI/MSI/s390: Fix single MSI only check

Martin Schwidefsky
2013-10-04T07:39:56Z

On Wed, 2 Oct 2013 12:48:19 +0200
Alexander Gordeev <agordeev@redhat.com> wrote:

> Multiple MSIs have never been supported on s390 architecture,
> but the platform code fails to report single MSI only.
>
> Signed-off-by: Alexander Gordeev <agordeev@redhat.com>
> ---
> arch/s390/pci/pci.c | 2 ++
> 1 files changed, 2 insertions(+), 0 deletions(-)
>
> diff --git a/arch/s390/pci/pci.c b/arch/s390/pci/pci.c
> index f17a834..c79c6e4 100644
> --- a/arch/s390/pci/pci.c
> +++ b/arch/s390/pci/pci.c
> @@ -427,6 +427,8 @@ int arch_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type)
> pr_debug("%s: requesting %d MSI-X interrupts...", __func__, nvec);
> if (type != PCI_CAP_ID_MSIX && type != PCI_CAP_ID_MSI)
> return -EINVAL;
> + if (type == PCI_CAP_ID_MSI && nvec > 1)
> + return 1;
> msi_vecs = min(nvec, ZPCI_MSI_VEC_MAX);
> msi_vecs = min_t(unsigned int, msi_vecs, CONFIG_PCI_NR_MSI);
>

Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

--
blue skies,
Martin.

"Reality continues to ruin my life." - Calvin.